An endoplasmic reticulum part at which COPII-coated vesicles are produced. [ http://www.ncbi.nlm.nih.gov/pubmed/15623529 http://www.neurolex.org/wiki/sao124393998 http://www.ncbi.nlm.nih.gov/pubmed/16957052 ]
Synonyms: ER exit site transitional ER
This is just here as a test because I lose it